UPPER AIR CALCULATIONS AND PLOTTING (Ver 5.52-LINUX-X11) Current filename: /home/data/upa/2025042123.upa.cvt Date: 2300Z 21 APR 25 Searching for HKNC... Searching the city database file for: HKNC ... Date:2300Z 21 APR 25 Station: HKNC WMO ident: 63741 Latitude: -1.30 Longitude: 36.75 Elevation: 1798.00 ------------------------------------------------------------------------------- LEV PRES HGHT TEMP DEWP RH DD WETB DIR SPD THETA THE-V THE-W THE-E W mb m C C % C C deg knt K K K K g/kg ------------------------------------------------------------------------------- SFC 822 1798 17.2 16.1 93 1.1 16.4 80 6 307.1 309.7 296.5 349.7 14.14 1 793 2103 15.2 14.6 96 0.6 14.8 79 6 308.1 310.6 296.3 348.4 13.30 2 663 3595 6.2 6.1 99 0.1 6.1 77 7 314.2 315.9 294.8 342.1 8.95 3 636 3935 3.8 2.0 88 1.8 2.8 76 7 315.2 316.6 293.6 337.1 6.97 4 616 4194 3.2 1.5 89 1.7 2.2 75 7 317.4 318.8 294.2 339.5 6.94 5 556 5021 0.2 -3.6 76 3.8 -1.7 74 7 323.3 324.4 294.4 340.6 5.28 6 529 5418 -2.3 -5.2 80 2.9 -3.7 73 8 325.0 325.9 294.6 341.2 4.92 7 434 6964 -11.5 -38.5 9 27.0 -16.9 70 8 332.2 332.3 292.6 333.4 0.32 8 413 7344 -13.3 -28.3 27 15.0 -17.2 69 9 334.6 334.8 293.8 337.9 0.90 9 400 7587 -15.5 -23.5 50 8.0 -17.9 68 9 334.8 335.1 294.3 340.0 1.44 10 369 8191 -20.3 -27.3 54 7.0 -22.0 67 9 336.3 336.5 294.4 340.3 1.10 11 356 8456 -20.9 -38.9 18 18.0 -23.9 66 9 338.9 339.0 294.4 340.4 0.37 12 334 8925 -24.5 -42.5 17 18.0 -27.1 65 9 340.2 340.3 294.6 341.3 0.27 13 310 9463 -29.1 -33.9 63 4.8 -29.9 64 10 341.2 341.3 295.3 343.8 0.70 14 256 10806 -38.7 -48.7 34 10.0 -39.5 61 10 346.2 346.2 296.0 346.9 0.18 15 250 10969 -39.7 -50.7 30 11.0 -40.5 61 10 347.0 347.1 296.1 347.6 0.15 16 227 11621 -45.3 -56.3 28 11.0 -45.8 59 11 348.2 348.2 296.3 348.5 0.08 17 210 12136 -50.3 -58.3 38 8.0 -50.6 58 11 348.2 348.2 296.3 348.5 0.07 18 200 12453 -52.9 -56.7 63 3.8 -53.0 57 11 349.0 349.0 296.5 349.4 0.09 19 183 13022 -56.3 -63.3 41 7.0 -56.5 56 11 352.5 352.5 297.2 352.6 0.04 20 170 13486 -60.3 -65.0 54 4.7 -60.4 54 12 353.3 353.3 297.4 353.5 0.04 21 158 13939 -63.9 -73.9 24 10.0 -64.0 53 12 354.7 354.7 297.7 354.7 0.01 22 131 15063 -72.9 -79.9 34 7.0 -72.9 50 13 358.1 358.1 298.3 358.1 0.01 23 115 15817 -78.3 -85.3 31 7.0 -78.3 48 13 361.7 361.7 299.0 361.7 0.00 24 106 16281 -79.7 -84.7 43 5.0 -79.7 47 13 367.6 367.6 300.1 367.6 0.00 25 93 17022 -79.9 -84.9 43 5.0 -79.9 45 14 381.2 381.2 302.5 381.2 0.00 26 83 17673 -76.1 -80.7 48 4.6 -76.1 43 14 401.5 401.5 305.4 401.6 0.01 27 76 18178 -78.9 -85.9 31 7.0 -78.9 41 15 405.9 405.9 306.0 405.9 0.00 28 70 18650 -75.7 -80.7 45 5.0 -75.7 40 15 422.4 422.4 308.0 422.5 0.01 29 57 19864 -66.9 -80.9 12 14.0 -67.1 318 17 468.0 468.0 312.5 468.0 0.01 30 50 20650 -69.3 -93.3 2 24.0 -69.5 265 18 480.2 480.2 313.5 480.2 0.00 31 30 23810 -61.5 -90.5 1 29.0 -62.3 75 32 577.0 577.0 319.5 577.0 0.00 TRP WND Sounding variables and indices Freezing level: 553.84 mb = 5052.59 m = 16576.53 ft Wetbulb zero: 582.17 mb = 4649.76 m = 15254.92 ft Precipitable water: 1.22 inches Sfc-500 mean rel hum: 87.48 % Est. max temperature: 23.49 C = 74.28 F Sfc-Lift cond lev (LCL): 808.89 mb = 1934.65 m = 6347.19 ft T: 16.30 C 700-500 lapse rate: 5.10 C/km ThetaE index: 12.56 C Layer 793.0- 616.0 mb Conv cond level (CCL): 759.99 mb = 2457.48 m = 8062.51 ft Mean mixing ratio: 12.53 g/kg Conv temperature: 19.55 C = 67.20 F Cap Strength: 0.21 C Lifted Index: -0.96 C Risk: Thunderstorms probable Lifted Index @300 mb: -0.82 C Lifted Index @700 mb: -0.88 C Parcel Indices Parcel: using 100 mb layer CAPE (B+): 295.98 J/kg Max Up Vert Vel: 24.33 m/s Conv Inhibition (B-): 0.47 J/kg Cap Strength: 0.21 C Lift Cond Lev (LCL): 764.80 mb = 2404.95 m = 7890.18 ft Lev Free Conv (LFC): 749.80 mb = 2570.02 m = 8431.73 ft Equ Level (EL): 269.80 mb = 10437.87 m = 34244.57 ft B at Equ Level: 295.37 J/kg Max Parcel Lev (MPL): 159.80 mb = 13868.64 m = 45500.25 ft Wind level data Storm motion: 81 at 8 knt ---------------------------------------------------------- TRUE/GROUND REL | STORM REL LEV P H DIR SPD U V | DIR SPD U V mb m knt m/s | knt m/s ---------------------------------------------------------- 0 822 1798 80 6 -5.9 -1.0 | 265 2 1.9 0.2 1 70 18650 40 15 -9.6 -11.5 | 10 10 -1.9 -10.3 2 50 20650 265 18 17.9 1.6 | 264 26 25.7 2.8 3 30 23810 75 32 -30.9 -8.3 | 73 24 -23.1 -7.1 Wind Parameters Mean winds (0-6000m): 51.1 at 10.5 knts Storm direction: 81.1 at 7.9 knts Storm rel Dir Shear (0-3000m): 140.2 deg Storm rel helicity (0-3000m) pos: 0.0 neg: 0.0 tot: 0.0 m^2/s^2 ave: 0.0 10^-3 m/s^2 rel: 0.00 Storm rel vorticity (0-3000m) horiz: 0.0 stream: 0.0 10^-3/s Energy-Hel index: 0.00 Storm Parameters ------------------------------------------------------------------------------- Depth Mean Inflow| Shear | Helicity | Vorticity AGL Dir Spd Dir Spd| Pos Neg Tot| Pos Neg Tot Ave Rel | Hor Strm m knt knt| 10^-3/s | m^2/s^2 m/s^2 | 10^-3/s ------------------------------------------------------------------------------- 500 NO DATA | | | 1000 NO DATA | | | 1500 NO DATA | | | 2000 NO DATA | | | 2500 NO DATA | | | 3000 NO DATA | | | 4000 NO DATA | | | 5000 NO DATA | | | 6000 NO DATA | | | Wrote GIF file: /home/apache/climate/data/raob//HKNC/skewt/HKNC.skewt.20250421.23.gif